Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
Define watt-hour. How many joules are equal to 1 watt-hour?
At a given time, a house is supplied with 100 A at 220 V. How many 75 W, 220 V light bulb could be switched on in the house at the same time (if they are all connected in parallel)?
Why is an electric light bulb not filled with air? Explain why argon or nitrogen is filled in an electric bulb.
Two bulbs are rated 60 W, 220 V and 60 W, 110 V respectively. Calculate the ratio of their
resistances
What is electric power? State and define its S.I. unit.
Household wiring for lamp connections can either be done in parallel or in series.Which one would you prefer? Give a reason for your answer.
Three 250 W heaters are connected in parallel to a 100 V supply, Calculate the resistance of each heater.
A 100-watt electric bulb is used for 5 hours daily and four 60 watt bulbs are used for 5 hours daily. Calculate the energy consumed (in kWh) in the month of January.
1 kWh = ______ J.
